Alright, let's solve this math problem step by step. First, we have the number 231. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 287. So, we're going to take the number 231 and add it to itself 287 times.
Step 1: 0 + 231 = 231
Step 2: 231 + 231 = 462
Step 3: 462 + 231 = 693
Step 4: 693 + 231 = 924
Step 5: 924 + 231 = 1155
Step 6: 1155 + 231 = 1386
Step 7: 1386 + 231 = 1617
Step 8: 1617 + 231 = 1848
Step 9: 1848 + 231 = 2079
Step 10: 2079 + 231 = 2310
Step 11: 2310 + 231 = 2541
Step 12: 2541 + 231 = 2772
Step 13: 2772 + 231 = 3003
Step 14: 3003 + 231 = 3234
Step 15: 3234 + 231 = 3465
Step 16: 3465 + 231 = 3696
Step 17: 3696 + 231 = 3927
Step 18: 3927 + 231 = 4158
Step 19: 4158 + 231 = 4389
Step 20: 4389 + 231 = 4620
Step 21: 4620 + 231 = 4851
Step 22: 4851 + 231 = 5082
Step 23: 5082 + 231 = 5313
Step 24: 5313 + 231 = 5544
Step 25: 5544 + 231 = 5775
Step 26: 5775 + 231 = 6006
Step 27: 6006 + 231 = 6237
Step 28: 6237 + 231 = 6468
Step 29: 6468 + 231 = 6699
Step 30: 6699 + 231 = 6930
Step 31: 6930 + 231 = 7161
Step 32: 7161 + 231 = 7392
Step 33: 7392 + 231 = 7623
Step 34: 7623 + 231 = 7854
Step 35: 7854 + 231 = 8085
Step 36: 8085 + 231 = 8316
Step 37: 8316 + 231 = 8547
Step 38: 8547 + 231 = 8778
Step 39: 8778 + 231 = 9009
Step 40: 9009 + 231 = 9240
Step 41: 9240 + 231 = 9471
Step 42: 9471 + 231 = 9702
Step 43: 9702 + 231 = 9933
Step 44: 9933 + 231 = 10164
Step 45: 10164 + 231 = 10395
Step 46: 10395 + 231 = 10626
Step 47: 10626 + 231 = 10857
Step 48: 10857 + 231 = 11088
Step 49: 11088 + 231 = 11319
Step 50: 11319 + 231 = 11550
Step 51: 11550 + 231 = 11781
Step 52: 11781 + 231 = 12012
Step 53: 12012 + 231 = 12243
Step 54: 12243 + 231 = 12474
Step 55: 12474 + 231 = 12705
Step 56: 12705 + 231 = 12936
Step 57: 12936 + 231 = 13167
Step 58: 13167 + 231 = 13398
Step 59: 13398 + 231 = 13629
Step 60: 13629 + 231 = 13860
Step 61: 13860 + 231 = 14091
Step 62: 14091 + 231 = 14322
Step 63: 14322 + 231 = 14553
Step 64: 14553 + 231 = 14784
Step 65: 14784 + 231 = 15015
Step 66: 15015 + 231 = 15246
Step 67: 15246 + 231 = 15477
Step 68: 15477 + 231 = 15708
Step 69: 15708 + 231 = 15939
Step 70: 15939 + 231 = 16170
Step 71: 16170 + 231 = 16401
Step 72: 16401 + 231 = 16632
Step 73: 16632 + 231 = 16863
Step 74: 16863 + 231 = 17094
Step 75: 17094 + 231 = 17325
Step 76: 17325 + 231 = 17556
Step 77: 17556 + 231 = 17787
Step 78: 17787 + 231 = 18018
Step 79: 18018 + 231 = 18249
Step 80: 18249 + 231 = 18480
Step 81: 18480 + 231 = 18711
Step 82: 18711 + 231 = 18942
Step 83: 18942 + 231 = 19173
Step 84: 19173 + 231 = 19404
Step 85: 19404 + 231 = 19635
Step 86: 19635 + 231 = 19866
Step 87: 19866 + 231 = 20097
Step 88: 20097 + 231 = 20328
Step 89: 20328 + 231 = 20559
Step 90: 20559 + 231 = 20790
Step 91: 20790 + 231 = 21021
Step 92: 21021 + 231 = 21252
Step 93: 21252 + 231 = 21483
Step 94: 21483 + 231 = 21714
Step 95: 21714 + 231 = 21945
Step 96: 21945 + 231 = 22176
Step 97: 22176 + 231 = 22407
Step 98: 22407 + 231 = 22638
Step 99: 22638 + 231 = 22869
Step 100: 22869 + 231 = 23100
Step 101: 23100 + 231 = 23331
Step 102: 23331 + 231 = 23562
Step 103: 23562 + 231 = 23793
Step 104: 23793 + 231 = 24024
Step 105: 24024 + 231 = 24255
Step 106: 24255 + 231 = 24486
Step 107: 24486 + 231 = 24717
Step 108: 24717 + 231 = 24948
Step 109: 24948 + 231 = 25179
Step 110: 25179 + 231 = 25410
Step 111: 25410 + 231 = 25641
Step 112: 25641 + 231 = 25872
Step 113: 25872 + 231 = 26103
Step 114: 26103 + 231 = 26334
Step 115: 26334 + 231 = 26565
Step 116: 26565 + 231 = 26796
Step 117: 26796 + 231 = 27027
Step 118: 27027 + 231 = 27258
Step 119: 27258 + 231 = 27489
Step 120: 27489 + 231 = 27720
Step 121: 27720 + 231 = 27951
Step 122: 27951 + 231 = 28182
Step 123: 28182 + 231 = 28413
Step 124: 28413 + 231 = 28644
Step 125: 28644 + 231 = 28875
Step 126: 28875 + 231 = 29106
Step 127: 29106 + 231 = 29337
Step 128: 29337 + 231 = 29568
Step 129: 29568 + 231 = 29799
Step 130: 29799 + 231 = 30030
Step 131: 30030 + 231 = 30261
Step 132: 30261 + 231 = 30492
Step 133: 30492 + 231 = 30723
Step 134: 30723 + 231 = 30954
Step 135: 30954 + 231 = 31185
Step 136: 31185 + 231 = 31416
Step 137: 31416 + 231 = 31647
Step 138: 31647 + 231 = 31878
Step 139: 31878 + 231 = 32109
Step 140: 32109 + 231 = 32340
Step 141: 32340 + 231 = 32571
Step 142: 32571 + 231 = 32802
Step 143: 32802 + 231 = 33033
Step 144: 33033 + 231 = 33264
Step 145: 33264 + 231 = 33495
Step 146: 33495 + 231 = 33726
Step 147: 33726 + 231 = 33957
Step 148: 33957 + 231 = 34188
Step 149: 34188 + 231 = 34419
Step 150: 34419 + 231 = 34650
Step 151: 34650 + 231 = 34881
Step 152: 34881 + 231 = 35112
Step 153: 35112 + 231 = 35343
Step 154: 35343 + 231 = 35574
Step 155: 35574 + 231 = 35805
Step 156: 35805 + 231 = 36036
Step 157: 36036 + 231 = 36267
Step 158: 36267 + 231 = 36498
Step 159: 36498 + 231 = 36729
Step 160: 36729 + 231 = 36960
Step 161: 36960 + 231 = 37191
Step 162: 37191 + 231 = 37422
Step 163: 37422 + 231 = 37653
Step 164: 37653 + 231 = 37884
Step 165: 37884 + 231 = 38115
Step 166: 38115 + 231 = 38346
Step 167: 38346 + 231 = 38577
Step 168: 38577 + 231 = 38808
Step 169: 38808 + 231 = 39039
Step 170: 39039 + 231 = 39270
Step 171: 39270 + 231 = 39501
Step 172: 39501 + 231 = 39732
Step 173: 39732 + 231 = 39963
Step 174: 39963 + 231 = 40194
Step 175: 40194 + 231 = 40425
Step 176: 40425 + 231 = 40656
Step 177: 40656 + 231 = 40887
Step 178: 40887 + 231 = 41118
Step 179: 41118 + 231 = 41349
Step 180: 41349 + 231 = 41580
Step 181: 41580 + 231 = 41811
Step 182: 41811 + 231 = 42042
Step 183: 42042 + 231 = 42273
Step 184: 42273 + 231 = 42504
Step 185: 42504 + 231 = 42735
Step 186: 42735 + 231 = 42966
Step 187: 42966 + 231 = 43197
Step 188: 43197 + 231 = 43428
Step 189: 43428 + 231 = 43659
Step 190: 43659 + 231 = 43890
Step 191: 43890 + 231 = 44121
Step 192: 44121 + 231 = 44352
Step 193: 44352 + 231 = 44583
Step 194: 44583 + 231 = 44814
Step 195: 44814 + 231 = 45045
Step 196: 45045 + 231 = 45276
Step 197: 45276 + 231 = 45507
Step 198: 45507 + 231 = 45738
Step 199: 45738 + 231 = 45969
Step 200: 45969 + 231 = 46200
Step 201: 46200 + 231 = 46431
Step 202: 46431 + 231 = 46662
Step 203: 46662 + 231 = 46893
Step 204: 46893 + 231 = 47124
Step 205: 47124 + 231 = 47355
Step 206: 47355 + 231 = 47586
Step 207: 47586 + 231 = 47817
Step 208: 47817 + 231 = 48048
Step 209: 48048 + 231 = 48279
Step 210: 48279 + 231 = 48510
Step 211: 48510 + 231 = 48741
Step 212: 48741 + 231 = 48972
Step 213: 48972 + 231 = 49203
Step 214: 49203 + 231 = 49434
Step 215: 49434 + 231 = 49665
Step 216: 49665 + 231 = 49896
Step 217: 49896 + 231 = 50127
Step 218: 50127 + 231 = 50358
Step 219: 50358 + 231 = 50589
Step 220: 50589 + 231 = 50820
Step 221: 50820 + 231 = 51051
Step 222: 51051 + 231 = 51282
Step 223: 51282 + 231 = 51513
Step 224: 51513 + 231 = 51744
Step 225: 51744 + 231 = 51975
Step 226: 51975 + 231 = 52206
Step 227: 52206 + 231 = 52437
Step 228: 52437 + 231 = 52668
Step 229: 52668 + 231 = 52899
Step 230: 52899 + 231 = 53130
Step 231: 53130 + 231 = 53361
Step 232: 53361 + 231 = 53592
Step 233: 53592 + 231 = 53823
Step 234: 53823 + 231 = 54054
Step 235: 54054 + 231 = 54285
Step 236: 54285 + 231 = 54516
Step 237: 54516 + 231 = 54747
Step 238: 54747 + 231 = 54978
Step 239: 54978 + 231 = 55209
Step 240: 55209 + 231 = 55440
Step 241: 55440 + 231 = 55671
Step 242: 55671 + 231 = 55902
Step 243: 55902 + 231 = 56133
Step 244: 56133 + 231 = 56364
Step 245: 56364 + 231 = 56595
Step 246: 56595 + 231 = 56826
Step 247: 56826 + 231 = 57057
Step 248: 57057 + 231 = 57288
Step 249: 57288 + 231 = 57519
Step 250: 57519 + 231 = 57750
Step 251: 57750 + 231 = 57981
Step 252: 57981 + 231 = 58212
Step 253: 58212 + 231 = 58443
Step 254: 58443 + 231 = 58674
Step 255: 58674 + 231 = 58905
Step 256: 58905 + 231 = 59136
Step 257: 59136 + 231 = 59367
Step 258: 59367 + 231 = 59598
Step 259: 59598 + 231 = 59829
Step 260: 59829 + 231 = 60060
Step 261: 60060 + 231 = 60291
Step 262: 60291 + 231 = 60522
Step 263: 60522 + 231 = 60753
Step 264: 60753 + 231 = 60984
Step 265: 60984 + 231 = 61215
Step 266: 61215 + 231 = 61446
Step 267: 61446 + 231 = 61677
Step 268: 61677 + 231 = 61908
Step 269: 61908 + 231 = 62139
Step 270: 62139 + 231 = 62370
Step 271: 62370 + 231 = 62601
Step 272: 62601 + 231 = 62832
Step 273: 62832 + 231 = 63063
Step 274: 63063 + 231 = 63294
Step 275: 63294 + 231 = 63525
Step 276: 63525 + 231 = 63756
Step 277: 63756 + 231 = 63987
Step 278: 63987 + 231 = 64218
Step 279: 64218 + 231 = 64449
Step 280: 64449 + 231 = 64680
Step 281: 64680 + 231 = 64911
Step 282: 64911 + 231 = 65142
Step 283: 65142 + 231 = 65373
Step 284: 65373 + 231 = 65604
Step 285: 65604 + 231 = 65835
Step 286: 65835 + 231 = 66066
Step 287: 66066 + 231 = 66297

So, 231*287 = 66297